I’ll just do a proof by example since that will probably help the most. Assume that the default position is belief as you assert and now lets make a small list of the things you believe in shall we?
Mata Nui the Great Spirit, The Great Beings, Aldur, Belar, Chaldan, Eriond, Issa, Mara, Nedra, Torak UL, Jasmine, Olaf the Troll God, Illyria, Dinza, Barbas, Gideon, Zankou, Gan, Tak, Maturin, Ares, Hercules, Rao, Ra, Vext, Ominar Synn, Yggdrasil, Zhuqiaomon, Azulongmon, Ebonwumon, Baihumon, Fanglongmon, Lucemon, Seraphimon, Ophanimon, Cherubimon, Alphamon, Dexmon, Apocalymon, Susanoonmon, Cra, Ecaflip, Eniripsa, Feca, lop, Osamodas, Sacrier, Sadida, Sram Xelor…
Do I need to go one? I put some digimon in there because I used to like that show
The only question I have for you is why are you providing evidence for the unicorns existence? You don’t need to by default everyone believes in unicorns, it is me that has to supply evidence right? Wrong.